Radio frequency filter and radio frequency module

ABSTRACT

A radio frequency filter includes a first conductive pattern; a second conductive pattern connected to a first point of the first conductive pattern and extended; a third conductive pattern connected to a second point of the first conductive pattern and extended to surround a portion of the second conductive pattern; a fourth conductive pattern; a fifth conductive pattern connected to a third point of the fourth conductive pattern and extended; and a sixth conductive pattern connected to a fourth point of the fourth conductive pattern and extended to surround a portion of the fifth conductive pattern. The first conductive pattern extends toward the fourth conductive pattern and the fourth conductive pattern extends toward the first conductive pattern. A distance between the first conductive pattern and the fourth conductive pattern is greater than or equal to a distance between the third conductive pattern and the sixth conductive pattern.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 USC 119(a) of Korean PatentApplication No. 10-2018-0075307 filed on Jun. 29, 2018 in the KoreanIntellectual Property Office, the entire disclosure of which isincorporated herein by reference for all purposes.

BACKGROUND 1. Field

The following description relates to a radio frequency filter and aradio frequency module.

2. Description of the Related Art

Mobile communications data traffic is rapidly increasing every year.Technological developments are being actively conducted to support suchrapidly increasing data in real time in a wireless network. For example,applications such as the contents of IoT (Internet of Things) baseddata, augmented reality (AR), virtual reality (VR), live VR/AR combinedwith SNS, autonomous driving, sync view (a real time image of a userpoint of view transmitted using an ultra-small camera), and the like,require communications (e.g., 5G communications, mmWave communications,etc.) for supporting transmission and reception of large amounts ofdata.

Therefore, recently, millimeter wave (mmWave) communications including5th wave (5G) communications have been researched, and research into thecommercialization/standardization of a module that smoothly implementsmillimeter wave communications is also being performed.

However, a radio frequency filter that efficiently filters RF signals inhigh frequency bands (e.g., 24 GHz, 28 GHz, 36 GHz, 39 GHz, 60 GHz, andthe like) has not yet been suggested or developed.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

In one general aspect, a radio frequency filter includes a firstconductive pattern extended from a first port and including a firstpoint and a second point; a second conductive pattern connected to thefirst point of the first conductive pattern and extended from the firstpoint; a third conductive pattern connected to the second point of thefirst conductive pattern and extended to surround at least a portion ofthe second conductive pattern; a fourth conductive pattern extended froma second port and including a third point and a fourth point; a fifthconductive pattern connected to the third point of the fourth conductivepattern and extended from the third point; and a sixth conductivepattern connected to the fourth point of the fourth conductive patternand extended to surround at least a portion of the fifth conductivepattern. The first conductive pattern extends toward the fourthconductive pattern from the first point and the fourth conductivepattern extends toward the first conductive pattern from the thirdpoint. A separation distance between the first conductive pattern andthe fourth conductive pattern is greater than or equal to a separationdistance between the third conductive pattern and the sixth conductivepattern.

A length of an extended portion of the first conductive pattern thatextends toward the fourth conductive pattern from the first point may beshorter than a distance between the first point and the second point,and a length of an extended portion of the fourth conductive patternthat extends toward the first conductive pattern from the third pointmay be shorter than a distance between the third point and the fourthpoint.

A width of the first conductive pattern may be greater than a separationdistance between the second conductive pattern and the third conductivepattern in a first lateral direction, and may be less than a separationdistance between the second conductive pattern and the third conductivepattern in a second lateral direction. A width of the fourth conductivepattern may be greater than a separation distance between the fifthconductive pattern and the sixth conductive pattern in a third lateraldirection, and may be less than a separation direction between the fifthconductive pattern and the sixth conductive pattern in a fourth lateraldirection.

A separation distance between one end of the second conductive patternand the third conductive pattern may be equal to a separation distancebetween the second conductive pattern and the third conductive patternin a first lateral direction, and a separation distance between one endof the fifth conductive pattern and the sixth conductive pattern may beequal to a separation distance between the fifth conductive pattern andthe sixth conductive pattern in a second lateral direction.

A separation distance between one end of the third conductive patternand the first conductive pattern may be equal to a separation distancebetween the second conductive pattern and the third conductive patternin a first lateral direction, and a separation distance between one endof the sixth conductive pattern and the fourth conductive pattern may beequal to a separation distance between the fifth conductive pattern andthe sixth conductive pattern in a second lateral direction.

A separation distance between the third conductive pattern and the sixthconductive pattern may be greater than the separation distance betweenthe second conductive pattern and the third conductive pattern in thefirst lateral direction, and may be greater than the separation distancebetween the fifth conductive pattern and the sixth conductive pattern inthe second lateral direction.

A seventh conductive pattern may be electromagnetically coupled to atleast a portion of the third conductive pattern, and an eighthconductive pattern may be electromagnetically coupled to at least aportion of the sixth conductive pattern. A separation distance betweenthe seventh conductive pattern and the eighth conductive pattern may beless than or equal to the separation distance between the firstconductive pattern and the fourth conductive pattern.

A ninth conductive pattern may be connected to a fifth point of theseventh conductive pattern and extended from the fifth point, a tenthconductive pattern may be connected to a sixth point of the seventhconductive pattern and extended to surround at least a portion of theninth conductive pattern, an eleventh conductive pattern may beconnected to a seventh point of the eighth conductive pattern andextended from the seventh point, and a twelfth conductive pattern may beconnected to an eighth point of the eighth conductive pattern andextended to surround at least a portion of the eleventh conductivepattern. A separation distance between the tenth conductive pattern andthe twelfth conductive pattern may be less than or equal to theseparation distance between the third conductive pattern and the sixthconductive pattern.

A distance from one end of the seventh conductive pattern to the fifthpoint may be less than a distance from the fifth point to the sixthpoint, and a distance from one end of the eighth conductive pattern tothe seventh point may be less than a distance from the seventh point tothe eighth point.

A separation distance between the third conductive pattern and theseventh conductive pattern may be greater than a separation distancebetween the tenth conductive pattern and the twelfth conductive patternand may be less than the separation distance between third conductivepattern and the sixth conductive pattern. A separation distance betweenthe sixth conductive pattern and the eighth conductive pattern may begreater than the separation distance between the tenth conductivepattern and the twelfth conductive pattern and may be less than theseparation distance between third conductive pattern and the sixthconductive pattern.

In another general aspect, a radio frequency filter includes a firstconductive pattern extended from a first port and including a firstpoint and a second point; a second conductive pattern connected to thefirst point of the first conductive pattern and extended from the firstpoint; a third conductive pattern connected to the second point of thefirst conductive pattern and extended to surround at least a portion ofthe second conductive pattern; a fourth conductive pattern extended froma second port and including a third point and a fourth point; a fifthconductive pattern connected to the third point of the fourth conductivepattern and extended from the third point; a sixth conductive patternconnected to the fourth point of the fourth conductive pattern andextended to surround at least a portion of the fifth conductive pattern;a seventh conductive pattern electromagnetically coupled to at least aportion of the third conductive pattern; and an eighth conductivepattern electromagnetically coupled to at least a portion of the sixthconductive pattern. A separation distance between the seventh conductivepattern and the eighth conductive pattern is less than or equal to aseparation distance between the third conductive pattern and the sixthconductive pattern.

A ninth conductive pattern may be connected to a fifth point of theseventh conductive pattern and extended from the fifth point, a tenthconductive pattern may be connected to a sixth point of the seventhconductive pattern and extended to surround at least a portion of theninth conductive pattern, an eleventh conductive pattern may beconnected to a seventh point of the eighth conductive pattern andextended from the seventh point, and a twelfth conductive pattern may beconnected to an eighth point of the eighth conductive pattern andextended to surround at least a portion of the eleventh conductivepattern. A separation distance between the tenth conductive pattern andthe twelfth conductive pattern may be less than or equal to theseparation distance between the third conductive pattern and the sixthconductive pattern.

A separation distance between the third conductive pattern and theseventh conductive pattern may be greater than the separation distancebetween the tenth conductive pattern and the twelfth conductive patternand may be less than the separation distance between third conductivepattern and the sixth conductive pattern. A separation distance betweenthe sixth conductive pattern and the eighth conductive pattern may begreater than the separation distance between the tenth conductivepattern and the twelfth conductive pattern and may be less than theseparation distance between third conductive pattern and the sixthconductive pattern.

In another general aspect, a radio frequency module includes anintegrated circuit (IC); an antenna layer including patch antennaselectrically connected to the IC, respectively; and a filter layerincluding radio frequency filters electrically connected tocorresponding patch antennas, respectively, and disposed between the ICand the antenna layer. At least one of the radio frequency filtersincludes a first conductive pattern extended from a first port andincluding a first point and a second point; a second conductive patternconnected to the first point of the first conductive pattern andextended from the first point; a third conductive pattern connected tothe second point of the first conductive pattern and extended tosurround at least a portion of the second conductive pattern; a fourthconductive pattern extended from a second port and including a thirdpoint and a fourth point; a fifth conductive pattern connected to thethird point of the fourth conductive pattern and extended from the thirdpoint; and a sixth conductive pattern connected to the fourth point ofthe fourth conductive pattern and extended to surround at least aportion of the fifth conductive pattern. The first conductive patternextends toward the fourth conductive pattern from the first point andthe fourth conductive pattern extends toward the first conductivepattern from the third point, and a separation distance between thefirst conductive pattern and the fourth conductive pattern is greaterthan or equal to a separation distance between the third conductivepattern and the sixth conductive pattern.

A core member may be configured to pass a base signal, and the IC mayreceive the base signal through the core member and may transmit a radiofrequency signal having a frequency higher than a frequency of the basesignal to the patch antennas.

An upper ground layer may be disposed between the antenna layer and thefilter layer and may overlap the radio frequency filters in a verticaldirection, and a lower ground layer may be disposed between the filterlayer and the IC and may overlap the radio frequency filters in thevertical direction.

An electronic device may include the radio frequency module and acommunications module electrically connected to the radio frequencymodule.

Other features and aspects will be apparent from the following detaileddescription, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram illustrating a radio frequency filter according toan example.

FIG. 2A is a diagram illustrating a radio frequency filter according toan example.

FIG. 2B is a diagram illustrating a radio frequency filter according toan example.

FIG. 2C is a diagram illustrating a radio frequency filter according toan example.

FIG. 2D is a diagram illustrating a radio frequency filter according toan example.

FIG. 3A is a diagram illustrating a radio frequency filter according toan example.

FIG. 3B is a diagram illustrating a radio frequency filter according toan example.

FIG. 3C is a diagram illustrating a radio frequency filter according toan example.

FIG. 3D is a diagram illustrating a radio frequency filter according toan example.

FIG. 4A is a diagram illustrating an equivalent circuit of a radiofrequency filter according to an example.

FIGS. 4B through 4D are diagrams illustrating a change in an S-parameterin a radio frequency filter according to an example.

FIG. 5 is a diagram illustrating a filter layer on which a radiofrequency filter according to an example is arranged.

FIG. 6 is a diagram illustrating an antenna layer and an integratedcircuit (IC) connected to a filter layer on which a radio frequencyfilter according to an example is arranged.

FIG. 7 is a diagram illustrating a radio frequency module according toan example.

FIGS. 8A and 8B are plan views illustrating layouts of a radio frequencymodule in an electronic device according to an example.

Throughout the drawings and the detailed description, the same referencenumerals refer to the same elements. The drawings may not be to scale,and the relative size, proportions, and depiction of elements in thedrawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader ingaining a comprehensive understanding of the methods, apparatuses,and/or systems described herein. However, various changes,modifications, and equivalents of the methods, apparatuses, and/orsystems described herein will be apparent after an understanding of thedisclosure of this application. For example, the sequences of operationsdescribed herein are merely examples, and are not limited to those setforth herein, but may be changed as will be apparent after anunderstanding of the disclosure of this application, with the exceptionof operations necessarily occurring in a certain order. Also,descriptions of features that are known in the art may be omitted forincreased clarity and conciseness.

The features described herein may be embodied in different forms, andare not to be construed as being limited to the examples describedherein. Rather, the examples described herein have been provided merelyto illustrate some of the many possible ways of implementing themethods, apparatuses, and/or systems described herein that will beapparent after an understanding of the disclosure of this application.

Herein, it is noted that use of the term “may” with respect to anexample or embodiment, e.g., as to what an example or embodiment mayinclude or implement, means that at least one example or embodimentexists in which such a feature is included or implemented while allexamples and embodiments are not limited thereto.

Throughout the specification, when an element, such as a layer, region,or substrate, is described as being “on,” “connected to,” or “coupledto” another element, it may be directly “on,” “connected to,” or“coupled to” the other element, or there may be one or more otherelements intervening therebetween. In contrast, when an element isdescribed as being “directly on,” “directly connected to,” or “directlycoupled to” another element, there can be no other elements interveningtherebetween.

As used herein, the term “and/or” includes any one and any combinationof any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used hereinto describe various members, components, regions, layers, or sections,these members, components, regions, layers, or sections are not to belimited by these terms. Rather, these terms are only used to distinguishone member, component, region, layer, or section from another member,component, region, layer, or section. Thus, a first member, component,region, layer, or section referred to in examples described herein mayalso be referred to as a second member, component, region, layer, orsection without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower”may be used herein for ease of description to describe one element'srelationship to another element as shown in the figures. Such spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. For example, if the device in the figures is turned over,an element described as being “above” or “upper” relative to anotherelement will then be “below” or “lower” relative to the other element.Thus, the term “above” encompasses both the above and below orientationsdepending on the spatial orientation of the device. The device may alsobe oriented in other ways (for example, rotated 90 degrees or at otherorientations), and the spatially relative terms used herein are to beinterpreted accordingly.

The terminology used herein is for describing various examples only, andis not to be used to limit the disclosure. The articles “a,” “an,” and“the” are intended to include the plural forms as well, unless thecontext clearly indicates otherwise. The terms “comprises,” “includes,”and “has” specify the presence of stated features, numbers, operations,members, elements, and/or combinations thereof, but do not preclude thepresence or addition of one or more other features, numbers, operations,members, elements, and/or combinations thereof.

Due to manufacturing techniques and/or tolerances, variations of theshapes shown in the drawings may occur. Thus, the examples describedherein are not limited to the specific shapes shown in the drawings, butinclude changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in variousways as will be apparent after an understanding of the disclosure ofthis application. Further, although the examples described herein have avariety of configurations, other configurations are possible as will beapparent after an understanding of the disclosure of this application.

FIG. 1 is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 1, a radio frequency filter may include a firstconductive pattern 111, a second conductive pattern 112, a thirdconductive pattern 113, a fourth conductive pattern 121, a fifthconductive pattern 122, and a sixth conductive pattern 123.

The first conductive pattern 111 may extend from a first port Port 1.

The second conductive pattern 112 may be connected to a first point P1-2of the first conductive pattern 111 and be extended therefrom.

The third conductive pattern 113 may be connected to a second point P1-3of the first conductive pattern 111 and extend to surround at least aportion of the second conductive pattern 112. A width W of the thirdconductive pattern 113 may be equal to the width of the first conductivepattern 111 and may be equal to the width of the second conductivepattern 112, but may be varied depending on a resonance frequencydesign. For example, the width W may be about 0.21 mm, but is notlimited to such a width.

A radio frequency signal transmitted from the first port Port1 may bebranched at the second point P1-3 of the first conductive pattern 111. Apath from the second point P1-3 to the second conductive pattern 112 anda path from the second point P1-3 to the third conductive pattern 113may each act as an inductance. The inductance may be determinedaccording to a distance L3 between the first point P1-2 and the secondpoint P1-3, and a longitudinal length L1 of the third conductive pattern113. For example, the distance L3 between the first point P1-2 and thesecond point P1-3 may be about 0.36 mm and the longitudinal length L1 ofthe third conductive pattern 113 may be about 0.4 mm, but are notlimited to such a configuration.

The second conductive pattern 112 and the third conductive pattern 113may be electromagnetically coupled to each other. A space between thesecond conductive pattern 112 and the third conductive pattern 113 mayact as a capacitance. The capacitance may be determined according to alateral separate distance G3 of the second conductive pattern 112 to thethird conductive pattern 113.

The fourth conductive pattern 121 may extend from a second port Port 2.The fourth conductive pattern 121 and the first conductive pattern 111may have bilateral symmetry with respect to each other, but may havebilateral asymmetry depending on a resonance frequency design.

The fifth conductive pattern 122 may be connected to a third point P2-2of the fourth conductive pattern 121 and be extended therefrom. Thefifth conductive pattern 122 and the second conductive pattern 112 mayhave bilateral symmetry with respect to each other, but may havebilateral asymmetry depending on a resonance frequency design.

The sixth conductive pattern 123 may be connected to a fourth point P2-3of the fourth conductive pattern 121 and extend to surround at least aportion of the fifth conductive pattern 122. The sixth conductivepattern 123 and the third conductive pattern 113 may have bilateralsymmetry with respect to each other, but may have bilateral asymmetrydepending on a resonance frequency design.

A radio frequency signal transmitted from the second port Port2 may bebranched at the fourth point P2-3 of the fourth conductive pattern 121.A path from the fourth point P2-3 to the fifth conductive pattern 122and a path from the fourth point P2-3 to the sixth conductive pattern123 may each act as an inductance.

The fifth conductive pattern 122 and the sixth conductive pattern 123may be electromagnetically coupled to each other. A space between thefifth conductive pattern 122 and the sixth conductive pattern 123 mayact as a capacitance.

The third conductive pattern 113 and the sixth conductive pattern 123may be electromagnetically coupled to each other. A space between thethird conductive pattern 113 and the sixth conductive pattern 123 mayact as a capacitance.

The radio frequency filter may have a bandwidth based on a combinationof a plurality of resonance frequencies determined by the capacitanceand the inductance. Radio frequency signals of frequencies within thebandwidth may pass through between the first port Port1 and the secondport Port2, and noises of frequencies out of the bandwidth may befiltered.

One boundary of the bandwidth may correspond to a first resonancefrequency determined according to a combination of some capacitance andsome inductance, and the other boundary of the bandwidth may correspondto a second resonance frequency determined according to a combination ofsome other capacitance and some other inductance.

The radio frequency signals close to the boundaries of the bandwidth maybe slightly filtered, and the noises close to the boundaries of thebandwidth may be slightly passed. The radio frequency filter may haveskirt characteristic corresponding to a rate of change in filteringaccording to a change in frequency at the boundaries of the bandwidth.

The radio frequency filter may have an additional resonance frequencyclose to the first and second resonance frequencies so as to pass theradio signals close to the boundaries of the bandwidth more efficiently,and to filter the noises close to the boundaries of the bandwidth moreefficiently. The skirt characteristic of the radio frequency filter maybe further improved.

The first conductive pattern 111 and the fourth conductive pattern 121may be extended to each other from the first point P1-2 and the thirdpoint P2-2, respectively, and may be extended so that a separationdistance D1 therebetween is greater than or equal to a separationdistance D3 between the third conductive pattern 113 and the sixthconductive pattern 123. For example, the separation distance D3 betweenthe third conductive pattern 113 and the sixth conductive pattern 123may be about 0.125 mm, but is not limited to such a configuration.

The first conductive pattern 111 and the third conductive pattern 113may be electromagnetically coupled to each other, the first conductivepattern 111 and the fourth conductive pattern 121 may beelectromagnetically coupled to each other, and the fourth conductivepattern 121 and the sixth conductive pattern 123 may beelectromagnetically coupled to each other. An extended region E1-1 ofthe first conductive pattern 111 and an extended region E2-1 of thefourth conductive pattern 121 may provide an additional capacitance.

The radio frequency filter may have an additional resonance frequencybased on the additional capacitance to thereby have more improved skirtcharacteristic.

The additional capacitance may be varied depending on an extended lengthof the extended region E1-1 of the first conductive pattern 111 and anextended length of the extended region E2-1 of the fourth conductivepattern 121. The additional capacitance may be varied depending on anextended length of an extended region E1-3 of the third conductivepattern 113 and an extended length of an extended region E2-3 of thesixth conductive pattern 123.

Since the additional capacitance may be determined according to aseparation distance G1 in a direction extending from one end of thethird conductive pattern 113 to the first conductive pattern 111, theadditional capacitance may be more finely adjusted. Therefore, the radiofrequency filter may have a more finely adjusted bandwidth.

An overall size of the radio frequency filter may not be substantiallyincreased even if the extended region E1-1 of the first conductivepattern 111 and the extended region E2-1 of the fourth conductivepattern 121 are added.

Since the radio frequency filter may have the additional capacitancewithout substantially increasing the overall size, the radio frequencyfilter may have improved filter performance over the size. Therefore,the radio frequency filter may be more efficiently disposed on a radiofrequency module.

FIG. 2A is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 2A, an extended region E1-1 of a first conductivepattern 111 a may be shorter (as compared to the example of FIG. 1) andan extended region E2-1 of a fourth conductive pattern 121 a may beshorter (as compared to the example of FIG. 1). A separation distance D2between the first conductive pattern 111 a and the fourth conductivepattern 121 a may be longer (as compared to the example of FIG. 1).

A capacitance according to the extended region E1-1 of the firstconductive pattern 111 a and a capacitance according to the extendedregion E2-1 of the fourth conductive pattern 121 a may be reduced.

A separation distance G1 in a direction extending from one end of thethird conductive pattern 113 to the first conductive pattern 111 a and aseparation distance G3 in a direction extending between the secondconductive pattern 112 and the third conductive pattern 113 may be equalto each other, and a separation distance in a direction extending fromone end of the sixth conductive pattern 123 to the fourth conductivepattern 121 a and a separation distance in a direction extending betweenthe fifth conductive pattern 122 and the sixth conductive pattern 123may be equal to each other.

A capacitance change rate according to an extended length of theextended region E1-1 of the first conductive pattern 111 a and acapacitance change rate according to an extended length of the extendedregion E2-1 of the fourth conductive pattern 121 a may each be stable.The radio frequency filter may have a more stable bandwidth.

FIG. 2B is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 2B, an extended region E1-3 of a third conductivepattern 113 a may be shorter (as compared to the example of FIG. 1) andan extended region E2-3 of a sixth conductive pattern 123 a may beshorter (as compared to the example of FIG. 1). A separation distance G2in a direction extending from one end of the third conductive pattern113 a to the first conductive pattern 111 and a separation distance in adirection extending from one end of the sixth conductive pattern 123 ato the fourth conductive pattern 121 may each be longer (as compared tothe example of FIG. 1).

A capacitance between the second conductive pattern 112 and the thirdconductive pattern 113 a may be reduced, and a capacitance between thefifth conductive pattern 122 and the sixth conductive pattern 123 a maybe reduced. Accordingly, some resonance frequency may be shifted.

A capacitance change rate according to a change in an extended length ofan extended region E1-1 of the first conductive pattern 111 may befurther reduced and a capacitance change rate according to a change inan extended length of an extended region E2-1 of the fourth conductivepattern 121 may be further reduced. That is, the radio frequency filtermay have a more finely adjusted bandwidth.

A separation distance G5 in a direction extending from one end of thesecond conductive pattern 112 to the third conductive pattern 113 a anda separation distance G3 in a lateral direction of the second conductivepattern 112 may be equal to each other, and a separation distance in adirection extending from one end of the fifth conductive pattern 122 tothe sixth conductive pattern 123 a and a separation distance in alateral direction of the fifth conductive pattern 122 may be equal toeach other.

Since the second conductive pattern 112 and the third conductive pattern113 a may be more stably coupled to each other, stable impedance mayresult. Since the fifth conductive pattern 122 and the sixth conductivepattern 123 a may be more stably coupled to each other, stable impedancemay result.

FIG. 2C is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 2C, the extended length of the second conductivepattern 112 a may be shorter (as compared to the example of FIG. 1) andthe extended length of the fifth conductive pattern 122 a may be shorter(as compared to the example of FIG. 1). A separation distance G6 in adirection extending from one end of the second conductive pattern 112 ato the third conductive pattern 113 may be longer (as compared to theexample of FIG. 1), and a separation distance in a direction extendingfrom the fifth conductive pattern 122 a to the sixth conductive pattern123 may be longer (as compared to the example of FIG. 1).

A separation distance D3 between the third conductive pattern 113 andthe sixth conductive pattern 123 may be longer than a separationdistance G4 in a lateral direction between the third conductive pattern113 and the second conductive pattern 112 a, and may be longer than aseparation distance in a lateral direction between the sixth conductivepattern 123 and the fifth conductive pattern 122 a.

Since the second conductive pattern 112 a and the third conductivepattern 113 may be more stably coupled to each other, stable impedancemay result. Since the fifth conductive pattern 122 a and the sixthconductive pattern 123 may be more stably coupled to each other, stableimpedance may result.

FIG. 2D is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 2D, a longitudinal length in a direction L2 of each ofa second conductive pattern 112 b, a third conductive pattern 113 b, afifth conductive pattern 122 b, and a sixth conductive pattern 123 b maybe longer (as compared to the example of FIG. 1).

An inductance and a capacitance of each of the second conductive pattern112 b, the third conductive pattern 113 b, the fifth conductive pattern122 b, and the sixth conductive pattern 123 b may be increased.

An extended length at the first point P1-2 of the first conductivepattern 111 may be shorter than a distance L3 between the first pointP1-2 and the second point P1-3, and an extended length at the thirdpoint P2-2 of the fourth conductive pattern 121 may be shorter than adistance between the third point P2-2 and the fourth point P2-3.

A capacitance change rate according to an extended length of theextended region E1-1 of the first conductive pattern 111 and acapacitance change rate according to an extended length of the extendedregion E2-1 of the fourth conductive pattern 121 may be each stable. Theradio frequency filter may have a more stable bandwidth.

The width of the first conductive pattern 111 may be greater than theseparation distance G3 in the lateral direction between the secondconductive pattern 112 b and the third conductive pattern 113 b and maybe shorter than a lateral separation distance L3 between the secondconductive pattern 112 b and the third conductive pattern 113 b, and thewidth of the fourth conductive pattern 121 may be greater than theseparation distance in the lateral direction between the fifthconductive pattern 122 b and the sixth conductive pattern 123 b and maybe shorter than a lateral separation distance between the fifthconductive pattern 122 b and the sixth conductive pattern 123 b. Theresonance frequency and the bandwidth of the radio frequency filter maybe more easily designed.

FIG. 3A is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 3A, the radio frequency filter may further include aseventh conductive pattern 131 and an eighth conductive pattern 141.

The seventh conductive pattern 131 may be extended so as to be inparallel to at least a portion of the third conductive pattern 113.Since the seventh conductive pattern 131 may be electromagneticallycoupled to the third conductive pattern 113, an additional capacitancemay be provided. The additional capacitance may be varied depending on aseparation distance D5 between the seventh conductive pattern 131 andthe third conductive pattern 113. For example, the separation distanceD5 between the seventh conductive pattern 131 and the third conductivepattern 113 may be about 0.115 mm, but is not limited to such adistance.

The eighth conductive pattern 141 may be extended so as to be inparallel to at least a portion of the sixth conductive pattern 123.Since the eighth conductive pattern 141 may be electromagneticallycoupled to the sixth conductive pattern 123, an additional capacitancemay be provided. The additional capacitance may be varied depending on aseparation distance between the eighth conductive pattern 141 and thesixth conductive pattern 123.

A separation distance D7 between the seventh conductive pattern 131 andthe eighth conductive pattern 141 may be less than or equal to theseparation distance D1 between the first conductive pattern 111 and thefourth conductive pattern 121 and may be less than or equal to theseparation distance D3 between the third conductive pattern 113 and thesixth conductive pattern 123. Since the seventh conductive pattern 131and the eighth conductive pattern 141 may be electromagnetically coupledto each other, an additional capacitance may be provided. For example,the separation distance D7 between the seventh conductive pattern 131and the eighth conductive pattern 141 may be about 0.055 mm, but is notlimited to such a distance.

The additional capacitance provided by the seventh conductive pattern131 and the eighth conductive pattern 141 may act in a similar manner asthe capacitance provided by the extended region E1-1 of the firstconductive pattern 111 and the extended region E2-1 of the fourthconductive pattern 121. The radio frequency filter may provide theadditional capacitance through the seventh conductive pattern 131 andthe eighth conductive pattern 141 without having the extended regionE1-1 of the first conductive pattern 111 and the extended region E2-1 ofthe fourth conductive pattern 121 to thereby have a more improved skirtcharacteristic and a more finely adjusted bandwidth.

FIG. 3B is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 3B, the radio frequency filter may further include aninth conductive pattern 132, a tenth conductive pattern 133, aneleventh conductive pattern 142, and a twelfth conductive pattern 143.

The ninth conductive pattern 132 may be connected to a fifth point P3-2of the seventh conductive pattern 131 a and be extended therefrom, andmay provide an additional inductance corresponding to an extended lengthof the ninth conductive pattern 132.

The tenth conductive pattern 133 may be connected to a sixth point P3-3of the seventh conductive pattern 131 a and be extended so as tosurround at least a portion of the ninth conductive pattern 132, and mayprovide an inductance corresponding to an extended length of the tenthconductive pattern 133. Since at least a portion of the tenth conductivepattern 133 may be electromagnetically coupled to the ninth conductivepattern 132, an additional inductance may be provided.

The eleventh conductive pattern 142 may be connected to a seventh pointP4-2 of an eighth conductive pattern 141 a and be extended therefrom.The eleventh conductive pattern 142 and the ninth conductive pattern 132may have bilateral symmetry with respect to each other, but may havebilateral asymmetry depending on a resonance frequency design.

The twelfth conductive pattern 143 may be connected to an eighth pointP4-3 of the eighth conductive pattern 141 a and be extended to surroundat least a portion of the eleventh conductive pattern 142. The twelfthconductive pattern 143 and the tenth conductive pattern 133 may havebilateral symmetry with respect to each other, but may have bilateralasymmetry depending on a resonance frequency design.

The radio frequency filter may have additional impedance according tothe ninth conductive pattern 132, the tenth conductive pattern 133, theeleventh conductive pattern 142, and the twelfth conductive pattern 143to thereby have an improved skirt characteristic and a more finelyadjusted bandwidth.

A separation distance D7 between the tenth conductive pattern 133 andthe twelfth conductive pattern 143 may be less than or equal to theseparation distance D3 between the third conductive pattern 113 and thesixth conductive pattern 123. Since the seventh conductive pattern 131 ato the twelfth conductive pattern 143 may have a larger influence on theradio frequency signal passing between the first port Port1 and thesecond port Port2, the respective components of the radio frequencyfilter may operate in a more balanced manner.

For example, the separation distance D5 between the third conductivepattern 113 and the seventh conductive pattern 131 a may be longer thanthe separation distance D7 between the tenth conductive pattern 133 andthe twelfth conductive pattern 143 and may be shorter than theseparation distance D3 between the third conductive pattern 113 and thesixth conductive pattern 123. The separation distance between the sixthconductive pattern 123 and the eighth conductive pattern 141 a may belonger than the separation distance D7 between the tenth conductivepattern 133 and the twelfth conductive pattern 143 and may be shorterthan the separation distance D3 between the third conductive pattern 113and the sixth conductive pattern 123. The respective components of theradio frequency filter may operate in a more balanced manner.

A separation distance G7 in a lateral direction between the ninthconductive pattern 132 and the tenth conductive pattern 133 may be about0.045 mm, but is not limited to such a distance.

FIG. 3C is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 3C, a ninth conductive pattern 132 a may be disposedso that a separation distance G8 in a lateral direction between theninth conductive pattern 132 a and a tenth conductive pattern 133 a islonger (as compared to the example of FIG. 3B), and an eleventhconductive pattern 142 a may be disposed so that a separation distancein a lateral direction between the eleventh conductive pattern 142 a anda twelfth conductive pattern 143 a is longer (as compared to the exampleof FIG. 3B). An extended region E3-1 of the seventh conductive pattern131 a and an extended region E4-1 of the eighth conductive pattern 141 amay each be included. A separation distance G9 in a direction extendingfrom the ninth conductive pattern 132 a to the tenth conductive pattern133 a may be varied depending on a resonance frequency design.

A length of an extended region E3-3 of the tenth conductive pattern 133a may be shorter (as compared to the example of FIG. 3B) and a length ofan extended region E4-3 of the twelfth conductive pattern 143 a may beshorter (as compared to the example of FIG. 3B). A capacitance betweenthe tenth conductive pattern 133 a and the ninth conductive pattern 132a may be reduced, and a capacitance between the twelfth conductivepattern 143 a and the eleventh conductive pattern 142 a may be reduced.

A separation distance D8 between the tenth conductive pattern 133 a andthe twelfth conductive pattern 143 a may be equal to the separationdistance D3 between the third conductive pattern 113 and the sixthconductive pattern 123.

FIG. 3D is a diagram illustrating a radio frequency filter according toan example.

Referring to FIG. 3D, the extended region E3-1 of the seventh conductivepattern 131 may be longer (as compared to the example in FIG. 3C) andthe extended region E4-1 of the eighth conductive pattern 141 may belonger (as compared to the example in FIG. 3C). A distance from a leftend of the seventh conductive pattern 131 a to the fifth point P3-2 maybe shorter than a distance L5 from the fifth point P3-2 to the sixthpoint P3-3, and a distance from a right end of the eighth conductivepattern 141 a to the seventh point P4-2 may be shorter than a distancefrom the seventh point P4-2 to the eighth point P4-3.

The extended region E3-1 of the seventh conductive pattern 131 may actin a similar manner to that of the extended region E1-1 of the firstconductive pattern 111, and the extended region E4-1 of the eighthconductive pattern 141 may act in a similar manner to that of theextended region E2-1 of the fourth conductive pattern 121. The radiofrequency filter may have an improved skirt characteristic and may havea more finely adjusted bandwidth by the additional capacitance accordingto the extended region E3-1 of the seventh conductive pattern 131 andthe extended region E4-1 of the eighth conductive pattern 141.

The longitudinal length in direction L7 of each of the ninth conductivepattern 132, the tenth conductive pattern 133, the eleventh conductivepattern 142, and the twelfth conductive pattern 143 may be longer.Accordingly, some inductance of the radio frequency filter may beincreased.

FIG. 4A is a diagram illustrating an equivalent circuit of a radiofrequency filter according to an example.

Referring to FIG. 4A, the first conductive pattern may be modeled withan inductance 111, the third conductive pattern may be modeled with aninductance 113, and the space between the second conductive pattern andthe third conductive pattern may be modeled with a capacitance 112.

The fourth conductive pattern may be modeled with an inductance 121, thesixth conductive pattern may be modeled with an inductance 123, and thespace between the fifth conductive pattern and the sixth conductivepattern may be modeled with a capacitance 122.

A space between the extended region of the third conductive pattern andthe extended region of the fourth conductive pattern may be modeled witha capacitance 114. The radio frequency filter may have the capacitance114 by adjusting the extended length of the third conductive pattern andthe extended length of the fourth conductive pattern.

A space between the third conductive pattern and the sixth conductivepattern may be modeled with a capacitance 124. The capacitance 124 maybe extended by adding the seventh conductive pattern to the twelfthconductive pattern.

FIGS. 4B through 4D are diagrams illustrating a change of an S-parameteraccording to a radio frequency filter according to an example.

Referring to FIG. 4B, a dotted line curve shows characteristic impedanceaccording to frequencies of 0 GHz to 50 GHz when the extended region ofthe third conductive pattern and the extended region of the fourthconductive pattern are not present, and a solid line curve shows thecharacteristic impedance according to the frequencies of 0 GHz to 50 GHzwhen the extended region of the third conductive pattern and theextended region of the fourth conductive pattern are present.

In the case in which the extended region of the third conductive patternand the extended region of the fourth conductive pattern are present,the characteristic impedance at about 28 GHz may have a value (a centervalue in a graph) close to the characteristic impedances of the firstand second ports.

Referring to FIG. 4C, a dotted line curve shows return loss according tofrequencies of 23 GHz to 33 GHz when the extended region of the thirdconductive pattern and the extended region of the fourth conductivepattern are not present, and a solid line curve shows the return lossaccording to the frequencies of 23 GHz to 33 GHz when the extendedregion of the third conductive pattern and the extended region of thefourth conductive pattern are present.

In the case in which the extended region of the third conductive patternand the extended region of the fourth conductive pattern are present,the return loss at the frequency of about 28 GHz may be lower.

Referring to FIG. 4D, a dotted line curve shows insertion loss accordingto frequencies of 23 GHz to 33 GHz when the extended region of the thirdconductive pattern and the extended region of the fourth conductivepattern are not present, and a solid line curve shows the insertion lossaccording to the frequencies of 23 GHz to 33 GHz when the extendedregion of the third conductive pattern and the extended region of thefourth conductive pattern are present.

In the case in which the extended region of the third conductive patternand the extended region of the fourth conductive pattern are present,the insertion loss at the frequency of about 28 GHz may be lower.

FIG. 5 is a diagram illustrating a filter layer on which a radiofrequency filter according to an example is arranged.

Referring to FIG. 5, a filter layer may include a plurality of radiofrequency filters 101, 103, 105, and 107. The plurality of radiofrequency filters 101, 103, 105, and 107 may correspond to the radiofrequency filters described above with reference to FIGS. 1 through 4D.

A plurality of filter ground layers 151, 152, 153, and 154 may disposedbetween the plurality of radio frequency filters 101, 103, 105, and 107.Accordingly, electromagnetic isolation between the plurality of radiofrequency filters 101, 103, 105, and 107 may be improved.

Since the radio frequency filter may have a reduced size while securinga filter performance, layout spaces of the plurality of filter groundlayers 151, 152, 153, and 154 may be easily extended. Accordingly, theelectromagnetic isolation between the plurality of radio frequencyfilters 101, 103, 105, and 107 may be further improved.

Each of a plurality of lower vias 161, 163, 165, and 167 may beelectrically connected to a first port of each of the plurality of radiofrequency filters 101, 103, 105, and 107, and each of a plurality ofupper vias 162, 164, 166, and 168 may be electrically connected to asecond port of each of the plurality of radio frequency filters 101,103, 105, and 107.

FIG. 6 is a diagram illustrating an antenna layer and an integratedcircuit (IC) connected to the filter layer on which the radio frequencyfilter according to an example is arranged.

Referring to FIG. 6, a radio frequency module according to an examplemay include an antenna layer 210, a filter layer 220, and an integratedcircuit (IC) 230.

The antennal layer 210 may include a plurality of patch antennas 211,213, 215, and 217, which are each electrically connected to the IC 230.Each of the plurality of patch antennas 211, 213, 215, and 217 may beelectrically connected to each of the plurality of upper vias describedabove.

The filter layer 220 may be the same as the filter layer illustrated inFIG. 5 and may be disposed between the antenna layer 210 and the IC 230.The radio frequency filter may be disposed outside of the IC 230 and maybe electrically adjacent to the plurality of patch antennas 211, 213,215, and 217 to filter the radio frequency signals.

The IC 230 may perform at least some of a frequency conversion,amplification, filtering, a phase control, and a power generation tothereby generate a converted radio frequency signal.

FIG. 7 is a diagram illustrating a radio frequency module according toan example.

Referring to FIG. 7, the radio frequency module may further include anupper ground layer 241, a lower ground layer 242, a passive component250, and a core member 260.

The upper ground layer 241 may be disposed between the antenna layer 210and the filter layer 220 and may overlap the plurality of radiofrequency filters 101 and 103 together when viewed in a verticaldirection. The electromagnetic isolation between the plurality of radiofrequency filters 101 and 103 and the plurality of patch antennas 211and 213 may be improved.

The lower ground layer 242 may be disposed between the filter layer 220and the IC 230 and may overlap the plurality of radio frequency filters101 and 103 together when viewed in a vertical direction. Theelectromagnetic isolation between the plurality of radio frequencyfilters 101 and 103 and the IC 230 may be improved.

The passive component 250 may be disposed on a lower surface of theradio frequency module and may be electrically connected to the IC 230to provide impedance. For example, the passive component 250 may includeat least a portion of a capacitor (e.g., a multilayer ceramic capacitor(MLCC)), an inductor, and a chip resistor. At least portions of thepassive component 250 and the IC 230 may be encapsulated by anencapsulant (e.g., a photo imagable encapsulant (PIE), an AjinomotoBuild-up film (ABF), or an epoxy molding compound (EMC)).

The core member 260 may be configured so that a base signal passesthrough the core member 260. For example, the core member 260 mayinclude core vias through which the base signal passes, and may includeelectrical connection structures (e.g., solder balls, pins, and lands)electrically connected to the core vias and connected to the outside.

The IC 230 may receive the base signal through the core member 260 andmay transmit a radio frequency signal having a frequency higher than thefrequency of the base signal to the plurality of patch antennas 211 and213.

The base signal may be an intermediate frequency (IF) signal or abaseband signal and may have frequencies (e.g., 2 GHz, 5 GHz, 10 GHz,and the like) lower than the frequencies (e.g., 24 GHz, 28 GHz, 36 GHz,39 GHz, and 60 GHz) of the radio frequency signal.

FIGS. 8A and 8B are plan views illustrating layouts of a radio frequencymodule in an electronic device according to an example.

Referring to FIG. 8A, a radio frequency module including a radiofrequency filter 100 g, a patch antenna pattern 1110 g, and aninsulating layer 1140 g may be disposed to be adjacent to a sideboundary of an electronic device 700 g on a set substrate 600 g of theelectronic device 700 g.

The electronic device 700 g may be a smartphone, a personal digitalassistant, a digital video camera, a digital still camera, a networksystem, a computer, a monitor, a tablet, a laptop, a netbook, atelevision, a video game, a smartwatch, an automotive component, or thelike, but is not limited to such devices.

A communications module 610 g and a baseband circuit 620 g may befurther disposed on the set substrate 600 g. The radio frequency modulemay be electrically connected to the communications module 610 g and/orthe baseband circuit 620 g through a coaxial cable 630 g.

The communications module 610 g may include at least a portion of amemory chip such as a volatile memory (for example, a DRAM), anon-volatile memory (for example, a ROM), a flash memory, or the like;an application processor chip such as a central processor (for example,a CPU), a graphics processor (for example, a GPU), a digital signalprocessor, a cryptographic processor, a microprocessor, amicrocontroller, or the like; and a logic chip such as an analog-digitalconverter, an application-specific IC (ASIC), or the like.

The baseband circuit 620 g may generate a base signal by performinganalog-digital conversion, and amplification, filtering, and frequencyconversion of an analog signal. The base signal input to and output fromthe baseband circuit 620 g may be transmitted to the radio frequencymodule through a cable.

For example, the base signal may be transmitted to the IC through anelectrical connection structure, a core via, and a wiring. The IC mayconvert the base signal into a radio frequency signal of a millimeterwave (mmWave) band.

Referring to FIG. 8B, a plurality of radio frequency modules eachincluding a radio frequency filter 100 h, a patch antenna pattern 1110h, and an insulating layer 1140 h may be disposed to be adjacent to aboundary of one side surface of an electronic device 700 h and aboundary of the other side surface thereof, respectively, on a setsubstrate 600 h of the electronic device 700 h. A communications module610 h and a baseband circuit 620 h may be further disposed on the setsubstrate 600 h. The plurality of radio frequency modules may beelectrically connected to the communications module 610 h and/or thebaseband circuit 620 h through a coaxial cable 630 h.

The conductive pattern, the via, the patch antenna, and the ground layermay include a metal material (e.g., a conductive material such as copper(Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead(Pb), titanium (Ti), or an alloy thereof), and may be formed by aplating method such as chemical vapor deposition (CVD), physical vapordeposition (PVD), sputtering, subtractive, additive, semi-additiveprocess (SAP), modified semi-additive process (MSAP), or the like, butis not limited to such configurations.

The insulating layer may be filled in at least a portion of a spacebetween the conductive pattern, the via, the patch antenna, and theground layer. For example, the insulating layer may be formed of FR4,liquid crystal polymer (LCP), low temperature co-fired ceramic (LTCC), athermosetting resin such as an epoxy resin, a thermoplastic resin suchas a polyimide resin, a resin in which the thermosetting resin or thethermoplastic resin is impregnated together with an inorganic filler ina core material such as a glass fiber (or a glass cloth or a glassfabric), for example, prepreg, Ajinomoto Build up Film (ABF), FR-4,Bismaleimide Triazine (BT), a photo imagable dielectric (PID) resin,generic copper clad laminate (CCL), or a glass or ceramic basedinsulating material.

Meanwhile, the RF signal may have a format according to wirelessfidelity (Wi-Fi) (Institute of Electrical And Electronics Engineers(IEEE) 802.11 family, or the like), worldwide interoperability formicrowave access (WiMAX) (IEEE 802.16 family, or the like), IEEE 802.20,long term evolution (LTE), evolution data only (Ev-DO), high speedpacket access+(HSPA+), high speed downlink packet access+(HSDPA+), highspeed uplink packet access+(HSUPA+), enhanced data GSM environment(EDGE), global system for mobile communications (GSM), globalpositioning system (GPS), general packet radio service (GPRS), codedivision multiple access (CDMA), time division multiple access (TDMA),digital enhanced cordless telecommunications (DECT), Bluetooth, 3G, 4G,and 5G protocols, and any other wireless and wired protocols designatedafter the abovementioned protocols, but is not limited to such formats.

The radio frequency filter according to the examples described hereinmay have more improved skirt characteristics and may have a more finelyadjusted bandwidth.

The radio frequency filter according to the examples described hereinmay have a reduced size while securing a filter performance, and may beefficiently arranged in the radio frequency module.

While this disclosure includes specific examples, it will be apparentafter an understanding of the disclosure of this application thatvarious changes in form and details may be made in these exampleswithout departing from the spirit and scope of the claims and theirequivalents. The examples described herein are to be considered in adescriptive sense only, and not for purposes of limitation. Descriptionsof features or aspects in each example are to be considered as beingapplicable to similar features or aspects in other examples. Suitableresults may be achieved if the described techniques are performed in adifferent order, and/or if components in a described system,architecture, device, or circuit are combined in a different manner,and/or replaced or supplemented by other components or theirequivalents. Therefore, the scope of the disclosure is defined not bythe detailed description, but by the claims and their equivalents, andall variations within the scope of the claims and their equivalents areto be construed as being included in the disclosure.

What is claimed is:
 1. A radio frequency module comprising: anintegrated circuit (IC); an antenna layer comprising patch antennaselectrically connected to the IC, respectively; and a filter layercomprising radio frequency filters electrically connected tocorresponding patch antennas among the patch antennas, respectively, anddisposed between the IC and the antenna layer, wherein at least one ofthe radio frequency filters comprises a first conductive patternextended from a first port and comprising a first point and a secondpoint; a second conductive pattern connected to the first point of thefirst conductive pattern and extended from the first point; a thirdconductive pattern connected to the second point of the first conductivepattern and extended to surround at least a portion of the secondconductive pattern; a fourth conductive pattern extended from a secondport and comprising a third point and a fourth point; a fifth conductivepattern connected to the third point of the fourth conductive patternand extended from the third point; a sixth conductive pattern connectedto the fourth point of the fourth conductive pattern and extended tosurround at least a portion of the fifth conductive pattern; an upperground layer disposed between the antenna layer and the filter layer andoverlapping the radio frequency filters in a vertical direction; and alower ground layer disposed between the filter layer and the IC andoverlapping the radio frequency filters in the vertical direction, andwherein the first conductive pattern extends toward the fourthconductive pattern from the first point and the fourth conductivepattern extends toward the first conductive pattern from the thirdpoint, and a separation distance between the first conductive patternand the fourth conductive pattern is greater than or equal to aseparation distance between the third conductive pattern and the sixthconductive pattern.
 2. A radio frequency filter comprising: a firstconductive pattern extended from a first port and comprising a firstpoint and a second point; a second conductive pattern connected to thefirst point of the first conductive pattern and extended from the firstpoint; a third conductive pattern connected to the second point of thefirst conductive pattern and extended to surround at least a portion ofthe second conductive pattern; a fourth conductive pattern extended froma second port and comprising a third point and a fourth point; a fifthconductive pattern connected to the third point of the fourth conductivepattern and extended from the third point; and a sixth conductivepattern connected to the fourth point of the fourth conductive patternand extended to surround at least a portion of the fifth conductivepattern, wherein the first conductive pattern extends toward the fourthconductive pattern from the first point and the fourth conductivepattern extends toward the first conductive pattern from the thirdpoint, and a separation distance between the first conductive patternand the fourth conductive pattern is greater than or equal to aseparation distance between the third conductive pattern and the sixthconductive pattern, and wherein a length of an extended portion of thefirst conductive pattern that extends toward the fourth conductivepattern from the first point is shorter than a distance between thefirst point and the second point, and a length of an extended portion ofthe fourth conductive pattern that extends toward the first conductivepattern from the third point is shorter than a distance between thethird point and the fourth point.
 3. The radio frequency filter of claim2, wherein a width of the first conductive pattern is greater than aseparation distance between the second conductive pattern and the thirdconductive pattern in a first lateral direction, and is less than aseparation distance between the second conductive pattern and the thirdconductive pattern in a second lateral direction, and a width of thefourth conductive pattern is greater than a separation distance betweenthe fifth conductive pattern and the sixth conductive pattern in a thirdlateral direction, and is less than a separation direction between thefifth conductive pattern and the sixth conductive pattern in a fourthlateral direction.
 4. The radio frequency filter of claim 2, wherein aseparation distance between one end of the second conductive pattern andthe third conductive pattern is equal to a separation distance betweenthe second conductive pattern and the third conductive pattern in afirst lateral direction, and a separation distance between one end ofthe fifth conductive pattern and the sixth conductive pattern is equalto a separation distance between the fifth conductive pattern and thesixth conductive pattern in a second lateral direction.
 5. The radiofrequency filter of claim 2, wherein a separation distance between oneend of the third conductive pattern and the first conductive pattern isequal to a separation distance between the second conductive pattern andthe third conductive pattern in a first lateral direction, and aseparation distance between one end of the sixth conductive pattern andthe fourth conductive pattern is equal to a separation distance betweenthe fifth conductive pattern and the sixth conductive pattern in asecond lateral direction.
 6. The radio frequency filter of claim 5,wherein a separation distance between the third conductive pattern andthe sixth conductive pattern is greater than the separation distancebetween the second conductive pattern and the third conductive patternin the first lateral direction, and is greater than the separationdistance between the fifth conductive pattern and the sixth conductivepattern in the second lateral direction.
 7. The radio frequency filterof claim 2, further comprising: a seventh conductive patternelectromagnetically coupled to at least a portion of the thirdconductive pattern; and an eighth conductive pattern electromagneticallycoupled to at least a portion of the sixth conductive pattern, wherein aseparation distance between the seventh conductive pattern and theeighth conductive pattern is less than or equal to the separationdistance between the first conductive pattern and the fourth conductivepattern.
 8. The radio frequency filter of claim 7, further comprising: aninth conductive pattern connected to a fifth point of the seventhconductive pattern and extended from the fifth point; a tenth conductivepattern connected to a sixth point of the seventh conductive pattern andextended to surround at least a portion of the ninth conductive pattern;an eleventh conductive pattern connected to a seventh point of theeighth conductive pattern and extended from the seventh point; and atwelfth conductive pattern connected to an eighth point of the eighthconductive pattern and extended to surround at least a portion of theeleventh conductive pattern, wherein a separation distance between thetenth conductive pattern and the twelfth conductive pattern is less thanor equal to the separation distance between the third conductive patternand the sixth conductive pattern.
 9. The radio frequency filter of claim8, wherein a distance from one end of the seventh conductive pattern tothe fifth point is less than a distance from the fifth point to thesixth point, and a distance from one end of the eighth conductivepattern to the seventh point is less than a distance from the seventhpoint to the eighth point.
 10. The radio frequency filter of claim 8,wherein a separation distance between the third conductive pattern andthe seventh conductive pattern is greater than a separation distancebetween the tenth conductive pattern and the twelfth conductive patternand is less than the separation distance between third conductivepattern and the sixth conductive pattern, and a separation distancebetween the sixth conductive pattern and the eighth conductive patternis greater than the separation distance between the tenth conductivepattern and the twelfth conductive pattern and is less than theseparation distance between third conductive pattern and the sixthconductive pattern.
 11. A radio frequency filter comprising: a firstconductive pattern extended from a first port and comprising a firstpoint and a second point; a second conductive pattern connected to thefirst point of the first conductive pattern and extended from the firstpoint; a third conductive pattern connected to the second point of thefirst conductive pattern and extended to surround at least a portion ofthe second conductive pattern; a fourth conductive pattern extended froma second port and comprising a third point and a fourth point; a fifthconductive pattern connected to the third point of the fourth conductivepattern and extended from the third point; a sixth conductive patternconnected to the fourth point of the fourth conductive pattern andextended to surround at least a portion of the fifth conductive pattern;a seventh conductive pattern electromagnetically coupled to at least aportion of the third conductive pattern; an eighth conductive patternelectromagnetically coupled to at least a portion of the sixthconductive pattern; a ninth conductive pattern connected to a fifthpoint of the seventh conductive pattern and extended from the fifthpoint; a tenth conductive pattern connected to a sixth point of theseventh conductive pattern and extended to surround at least a portionof the ninth conductive pattern; an eleventh conductive patternconnected to a seventh point of the eighth conductive pattern andextended from the seventh point; and a twelfth conductive patternconnected to an eighth point of the eighth conductive pattern andextended to surround at least a portion of the eleventh conductivepattern, wherein a separation distance between the seventh conductivepattern and the eighth conductive pattern is less than or equal to aseparation distance between the third conductive pattern and the sixthconductive pattern, a separation distance between the tenth conductivepattern and the twelfth conductive pattern is less than or equal to theseparation distance between the third conductive pattern and the sixthconductive pattern, a separation distance between the third conductivepattern and the seventh conductive pattern is greater than theseparation distance between the tenth conductive pattern and the twelfthconductive pattern and is less than the separation distance between thethird conductive pattern and the sixth conductive pattern, and aseparation distance between the sixth conductive pattern and the eighthconductive pattern is greater than the separation distance between thetenth conductive pattern and the twelfth conductive pattern and is lessthan the separation distance between the third conductive pattern andthe sixth conductive pattern.
 12. A radio frequency module comprising:an integrated circuit (IC); an antenna layer comprising patch antennaselectrically connected to the IC, respectively; and a filter layercomprising radio frequency filters electrically connected tocorresponding patch antennas among the patch antennas, respectively, anddisposed between the IC and the antenna layer, wherein at least one ofthe radio frequency filters comprises a first conductive patternextended from a first port and comprising a first point and a secondpoint; a second conductive pattern connected to the first point of thefirst conductive pattern and extended from the first point; a thirdconductive pattern connected to the second point of the first conductivepattern and extended to surround at least a portion of the secondconductive pattern; a fourth conductive pattern extended from a secondport and comprising a third point and a fourth point; a fifth conductivepattern connected to the third point of the fourth conductive patternand extended from the third point; and a sixth conductive patternconnected to the fourth point of the fourth conductive pattern andextended to surround at least a portion of the fifth conductive pattern,wherein the first conductive pattern extends toward the fourthconductive pattern from the first point and the fourth conductivepattern extends toward the first conductive pattern from the thirdpoint, and a separation distance between the first conductive patternand the fourth conductive pattern is greater than or equal to aseparation distance between the third conductive pattern and the sixthconductive pattern; and a core member configured to pass a base signal,wherein the first conductive pattern extends toward the fourthconductive pattern from the first point and the fourth conductivepattern extends toward the first conductive pattern from the thirdpoint, a separation distance between the first conductive pattern andthe fourth conductive pattern is greater than or equal to a separationdistance between the third conductive pattern and the sixth conductivepattern, and the IC receives the base signal through the core member andtransmits a radio frequency signal having a frequency higher than afrequency of the base signal to the patch antennas.
 13. An electronicdevice comprising: the radio frequency module of claim 12; and acommunications module electrically connected to the radio frequencymodule.